package g34930.td6Bis.Classes;

import java.util.Scanner ; 


public class SuiteB { 
    public static void main ( String[] args ) { 

	Scanner clavier = new Scanner ( System.in ) ;

	int nbrDeFois, cpt, nbr;

	nbr = 1 ;
	nbrDeFois = clavier.nextInt();

	for ( cpt = 1; cpt <= nbrDeFois; cpt ++) {

		System.out.print(nbr + ", ");
		if (cpt%2 == 0) {

			nbr = nbr + 2;

		}
		else {

			nbr = nbr + 1;

		}
		//nbr = nbr - 1;


	}
	System.out.println("");

    }


}
